查询表达式（ms访问）中的语法错误（缺少运算符）

Question

I am trying to run this code to access however it is giving me this error. I check other sites with related problem and it state that I need to put a parenthesis if there is 2 more joins. I been trying but no luck.

         select *
          from 
             (
                select group_id from tbl_group
                union 
                select group_id from table_group\website
             )a
            left outer join  tbl_group  on a.group_id = tbl_group.group_id
            left outer join  table_group\website on a.group_id=table_group\website.group_id;

Answer 1

How can you "select tbl_group.group_id from t1" and "select tbl_group.group_id from t2"? t1 and t2 dont have any reference to tbl_group. I think you're aliasing your tables all wrong.

Answer 2

When I compare your code with the link you provided, I don't see where you're pulling t1 and t2 from.

I think it should be tbl.group instead

Answer 3

SELECT A.*, tbl_group.group_id AS Col1, [table_group\website].group_id AS Col2
FROM ([SELECT group_id FROM tbl_group
UNION
SELECT group_id FROM table_group\website]. AS A LEFT JOIN tbl_group ON A.group_id = tbl_group.group_id) LEFT JOIN [table_group\website] ON A.group_id = [table_group\website].group_id;